baber/WOPTO huggingface dataset:
Patent GB-639668-A (GB)
Title: Selective calcination of dolomite
IPC: C04B2/10
Filed: 1947-07-08
Abstract: <PICT:0639668/III/1> Dolomite is converted to magnesium oxide and calcium carbonate by calcination at 1400-1520 DEG  F. of a fluidized layer thereof.  As shown, crushed dolomite is fed from hopper 35 to a point below the surface of a layer 25 which is fluidized and preheated by gases rising through a perforated plate 17 from the calcination layer 42.  Gases escape via pipe 28, solids separated by cyclone 29 being returned to layer 25.  The perforations in plate 17 are formed with countersunk seats for balls 20.  The preheated material overflows to layer 42 through pipe 41 fitted with a control valve 70, which layer is fluidized by gas passing through apertured plate 44 also provided with ball valves 20.  Heating of the layer to the dissociation temperature is effected electrically, or by oil burners 62, or by gas from jets 64 terminating adjacent the apertures in plate 44.  The calcined material overflows to layer 50 through pipe 46 fitted with a control valve 73, which layer is fluidized and cooled by air, stack gases, &c. blown through valved perforated plate 53, the material escaping via valved conduit 54.  An auxiliary gas burner \  61 is provided for the initial heating of the reactor which comprises a refractory-lined steel shell.  Pressure and temperature-indicating devices are disposed in the layers and the spaces thereabove.
Patent GB-274100-A (GB)
Title: Process of washing or cleaning wool
IPC: D01C3/00
Filed: 1926-05-03
Abstract: 274,100. Duhamel, E. C., and Compagnie GÚnÚrale des Industries Textiles. May 4, 1925, [Convention date]. Addition to 240,477. Washing, processes for.-Wool in bulk, if necessary after a. de-suinting treatment, is treated with a detergent liquor not containing suint, such as soap or carbonate of soda, and thereupon treated with concentrated suint liquor which is not purified for re-use. The soap or carbonate of soda bath may be purified for re-use and may be utilized in a saturating shaft as described in Specification 159,969. To maintain the concentration of the suint liquor bath, suint liquor of about 10‹ BÚ. may be added. A number of bowls with the suint liquor circulating in countercurrent may be used, with subsequent rinsing in water or a second soap washing. Antipurificative substances may be added. Specifications 221,521, 240,482, 240,499, 256,635, and 273,765 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) refers particularly to limed and acidified wools. This reference does not appear in the Specification as accepted.
Patent GB-1525422-A (GB)
Title: Hydrophone array system
IPC: B63B22/00
Filed: 1976-05-04
Abstract: 1525422 Hydrophone arrays SANDERS ASSOCIATES Inc 4 May 1976 18180/76 Heading G1G [Also in Division B7] A hydrophone array system comprises a plurality of hydrophones 34 on a cable 37, a buoyant body 22 with a transmitter 45, a cable 24 from the body 22 and connected with the cable 37 to a thruster 27 to urge the cable 37 in one direction, a member, e.g. a drogue 26, to resist the urging of the thruster and means to conduct signals from the hydrophones to the transmitter. In operation the system is dropped from an aircraft or over the side of a ship, and the buoyancy of the arrangement is such that the cable 37 is maintained in a horizontal position, with the thruster keeping the array taut in a current, or moving the array over a predetermined survey pattern. In Fig. 9 (not shown), the drogue is replaced by a buoyant below-surface body (51) connected to a seabed anchor (53). The arrangement in Fig. 10 (not shown), includes a buoy (61) connected to the drogue 60. In Figs. 11 and 12, (not shown), the drogue is replaced by a weight (65) connected to the buoyant body 22. The embodiments of Figs 13-20, (not shown), describe a system which can be remotely controlled from an aircraft and recovered after use, having an elastic suspension link (88) to help orientate the system housing (71), and isolate it from wave induced motion.
Patent GB-1393789-A (GB)
Title: Noise-figure monitoring circuit
IPC: G01S7/40
Filed: 1972-04-19
Abstract: 1393789 Radar HOLLANDSE SIGNAALAPPARATEN BV 19 April 1972 [20 April 1971] 18208/72 Heading H4D To monitor the noise figure No of a radar receiver while the receiver is operating, a burst of noise So at a predetermined level is injected from a source 13 into the input stage of the radar receiver during dead time intervals of alternate pulse repetition periods. A comparator 12 at the video output of the radar receiver compares the amplitude of noise received during successive dead times with a threshold level to convert each noise signal exceeding said level into a standardized pulse, the resulting standardized pulses being derived in alternate p.r.p.'s from the receiver noise No alone and the sum Po of the receiver noise No and the injected noise So. The receiver standardized pulses are counted in a first counter 20 and the sum pulses are counted in a second counter 21, with one of the counters, e.g. 21, causing the stoppage of further counting by both counters when its count reaches a predetermined count, e.g. 4096. The other counter, e.g. 20, then has a count indicative of the noise figure of the receiver. The threshold level Et is made variable such that a predetermined number, e.g. 2, of sum pulses always passes to the counter 21 (i.e. that counter which causes the stoppage of the count) in each respective p.r.p. This causes the time T for the counter 21 to reach its stoppage value 4096 to be constant. The channelling of the standardized pulses to their correct counters is achieved by gates 22, 24 with the stoppage of the count being caused by gates 23, 25. The mathematical theory of the monitoring is given.
Patent GB-559346-A (GB)
Title: Improvements in hydraulic valves
IPC: F16K31/38
Filed: 1942-12-22
Abstract: 559,346. Valves. VINCO CORPORATION. Dec. 22, 1942, No. 18213. Convention date, Dec. 2, 1941. [Classes 69 (ii) and 135] A hydraulic control valve, particularly adapted for controlling the traversing means for milling machines comprises a spool valve with a pressure fluid inlet intermediate its length connected by a passage through the valve to chambers at the ends of the valve and an electrically actuated auxiliary valve or valves for venting fluid from at least one of the chambers to cause the valve to move towards the vented chamber. In the form shown in the Figure the main valve has four lands 6, 7, 8, 9 adapted to connect two service ports 23, 24 alternately to a pressure port 22 or to exhaust ports 25, 26. The lands 7, 8 are bevelled at 53 so that in the valve's central position restricted connection is established between the service and exhaust ports. The pressure port 22 is connected to chambers 16, 16' at the ends of the valve by a longitudinal passage 13 in the valve fitted with throttling plugs 14, 15. The chamber 16' is connected to exhaust by a passage 28 under the control of a valve 30 actuated by a solenoid 31 energised through a manual switch 36 or through a continuous cycle. Similarly the chamber 16 is connected to exhaust through a passage 37 controlled by a solenoid actuated valve 52. Normally the valve is held in its central position by a spring 21 arranged between abutments 19, 20 slidably mounted in a ported member secured in the end of the passage 13. When one of the solenoids is energized the associated chamber is vented permitting the pressure in the other chamber to move the valve towards the vented chamber. In a modification the spring loading is omitted and the valve remains in one of the end positions. In another form pressure is constantly admitted to one and the valve is moved against the action of a spring by venting the other chamber.
Patent GB-671808-A (GB)
Title: Rock drill structure
IPC: E21B10/36
Filed: 1950-07-21
Abstract: 671,808. Percussive rock drills. ANNESLEY, G. July 21, 1950, No. 18253/50. Class 124. In a percussive rock drill the side and bottom walls 6, 7 of the rod-receiving socket 5 of the bit 1 have a degree of hardness considerably less than that of the impact head 2 of the bit, so that the side walls deform radially within their yield point upon forcible entry of the rod 9 into the socket. The bit has a primary zone R 1  comprising the cutting surfaces 3, a secondary zone R2, an intermediate zone R3, and an upper zone R4 comprising the socket, these zones being, respectively, of Rockwell C hardness 67-62, 50-45, 40-35 and 35-25. The socket and the end portion 10 of the rod are normally cylindrical, but may have flattened surfaces, whilst the lowest end 11 of the rod is reduced for a length of # to # inch to provide an annular space 11A between the rod and the socket. The socket has a tolerance of not more than 5/1000 inch. The rod has a core with maximum resistance to deformation and fatigue, and a skin of a depth of .003-.015 inch hardened to approximately 60 Rockwell C hardness to resist abrasion. The rod is 3/1000- 13/1000 inch oversize relative to the socket, and is “-1 inch longer than the socket so as to provide a portion 10' for engagement by a knock-off. tool.
Patent GB-644197-A (GB)
Title: Improvements in rotary, electric switches
Inventor: FLIGHT THEODORE NICHOLAS
IPC: H01H19/02
Filed: 1948-07-07
Abstract: 644,197. Multi-position switches. RHEOSTATIC CO., Ltd. July 7, 1948, No. 18278. [Class 38(v)] A rotary switch comprises a number of individual switch units operated by a rotary cam member 15, each switch unit comprising a terminal strip 10 with a silver contact 31, a pivoted switch strip 12 with a silver contact 13 and a second terminal strip 7 forming a pivot support for the strip 12. Each strip 7 has ears 9 turned over to fix the strip in the partitioned switch block 1, and an upstanding tongue 17 which enters a locating hole in a strip 12, the strips 12 being biassed towards the cam member by blade springs 18 This arrangement of the strips on their pivot supports is stated to provide a rubbing action between the strips and supports so as to keep their contacting surfaces clean. The switch is located in its operative positions by an indexing device consisting of interengaging spring loaded corrugated plates 25, 26, the plate 26 being held against rotation by ears 27
Patent GB-1028415-A (GB)
Title: Improvements in or relating to modulators
IPC: H03C1/48
Filed: 1963-05-08
Abstract: 1,028,415. Semi-conductor devices. SIEMENS-SCHUCKERTWERKE A.G. May 8, 1963 [May 8, 1962], No. 18285/63. Heading H1K. In a modulator of the kind in which a Hall plate is mounted in a gap in a magnetic circui including a winding, the zero error due to the voltage induced in the output leads by the magnetic flux is compensated by suitable disposition of the output leads. As shown, the magnetic circuit comprises block 1, 2 bridged by a block 3 all of ferrite and supported by non- magnetic members 11, 12. Block 3 is surrounded by coil 4 to which leads 5 are connected. A Hall plate, not shown, is mounted in a gap between the top of block 3 and the underside of block 1 and has control conductors 7 and output conductors 6. The zero error inducted in the output conductors may be eliminated by arranging the output leads so that the loop formed by them is not cut by the magnetic flux. This is possible with an open magnetic circuit or with a closed circuit provided with a slot. The modulator is mounted in a magnetic screen provided with threaded apertures for the insertion of a magnetic screw by which fine balancing of the zero error is obtained after coarse balancing by adjustment of the position of the output leads.
Patent GB-1394923-A (GB)
Title: Tubular construction assemblies
IPC: F16B2/14
Filed: 1973-04-17
Abstract: 1394923 Connecting elements; scaffolding joints M H R ROUX 17 April 1973 [27 April 1972] 18361/73 Headings E1S and E2B [Also in Division F2] A tubular construction element comprises a tube 1 having a pair of spaced, co-extensive gripping arms 2 extending from one end thereof, each of the arms 2 having at or adjacent its free end a key grip 5 on the inwardly facing surface thereof, and a keying member 3 for co-operation with the key grips, the arrangement being such that with a tube 4 confined between the arms 2 the keying member 3 is urged between the key grips 5 to engage the tube 5 and urge it against the adjacent end 1' of the tube 1. The co-operating portions of the key grips and the keying member are half-dovetailed in cross-section and the co-operating surfaces thereof slope in the form of a wedge. The portion of the keying member 3 facing the tube 4 to be secured is of truncated V-section. The arms 2 and keying member 3 may be provided with cut-out portions to lighten the structure. The gripping arms may be arranged obliquely or at right angles to the longitudinal axis of the tube of the tubular construction element. Several uses of the aforementioned elements are disclosed (Fig. 6, not shown) in a framework. The elements may be used in towers, girders and scaffoldings.
Patent GB-983441-A (GB)
Title: Improvements relating to the displacement of kerbs for traffic control
Inventor: GRAY THOMAS
IPC: E01F15/00
Filed: 1960-05-25
Abstract: 983,441. Roads. W. E. & F. DOBSON Ltd. May 19, 1961 [May 25, 1960], No. 18384/60. Heading E1G. [Also in Division F1] A kerb is movable from an inoperative to an operative position or between two operative positions to divide streams of traffic in a roadway. As shown, kerb sections 2, 3 are supported on cross members 4, Fig. 2, in a pit 5 and raised and lowered by hydraulic rams 7, the rams associated with one kerb section being linked to each by piping 8 and to the rams of adjacent sections and to control means 9 by piping 8b and 8a respectively. In an alternative embodiment (not shown), a kerb permanently projecting above the roadway surface is movable transversely of the roadway by horizontally-displaceable hydraulic cylinders mounted in the roadway and pivotally connected to the kerb or by hydraulic motors built into the kerb.
Patent GB-1220582-A (GB)
Title: Explosive working of metals
Inventor: ANDREW RONALD VINCENT
IPC: B21D26/08
Filed: 1967-04-21
Abstract: 1,220,582. Making heat-exchangers; lining tubes; jointing by tube-expanding. IMPERIAL CHEMICAL INDUSTRIES Ltd. 10 April, 1968 [21 April, 1967], No. 18488/67. Headings B3A, B3J and B3Q. [Also in Division F2] A method of expanding a metal tube into an interference fit with a surrounding member by means of an explosive comprises using a plastics force-transmitting material which is shattered by the explosive into small, non-adherent particles, the material being in the form of one or more hollow cylindrical units cut from a length of pre-formed tubing. The force-transmitting unit may be closed at one end and open at the other for insertion of the explosive charge, the closed end being closed by a block of axial thickness at least half as great as the radial thickness of the cylinder walls. The explosive charge may be a primary explosive or a combination of a primary explosive with one or more secondary explosives. A thermoplastics transmitting material may be used having a m.p. over 50‹ C. e.g. a polythene of density preferably not greater than 0À93 gm./c.c. at 20‹ C. The method may be used for securing tubes in heat-exchanger tube-plates, lining tubes with corrosion-resistant material, relining tubes where they have become thin or punctured and joining tubes end-to-end. A number of pieces of plastics tubing may be used within each other to achieve the desired wallthickness of transmission material. The pieces of tubing, the assembly and the charge may be only loosely fitted within each other. In an example, heat-exchanger tubes are expanded into grooved holes in a tube-plate.
Patent GB-530496-A (GB)
Title: Unwinding reel and carriage assembly for strip material
IPC: B21C47/34
Filed: 1939-06-26
Abstract: 530,496. Unwinding. BLISS CO., E. W., June 26, 1939, No. 18575. Convention date, June 27, 1938. [Class 83 (iv)] An unwinding reel and carriage assembly for receiving a coil of strip material, such as hot or cold strip metal, to be unwound and fed to a machine, comprises an expansible mandrel mounted on a rotary shaft, a support having a vertically adjustable platen and movable to bring the platen under the mandrel and to move the coil axially on to the man'drel, and means adjustable longitudinally of the mandrel for positioning the coil on the mandrel. A mandrel shaft 13 rotated by gearing from a motor 14 has keyed thereon a sleeve 16 provided with two sets of inclined slideways 17 in which side lugs 18 depending from the arcuate segments 19 of the mandrel so that when the sleeve is forced to the left by a fluid-operated piston connected by a rod 25 and plate 24 to the sleeve, the segments are expanded to grip the coil. The inner ends of the segments have flanges 20 and plates 21 to engage a ring 22 on the shaft to prevent longitudinal movement thereof and the outer free ends of the segments are curved at 23 to facilitate application of the coil. Below the mandrel is a pit 11 provided with rails along which a wheeled carriage 12 may be moved by a rack 30 driven by a motor 33 through reducing gear the carriage carrying also a floor plate 55 to cover the pit when it is moved to the left. The carriage supports a platen 35 which may be moved vertically mechanically or by a fluid-operated piston 38. It also carries a gauge 41 adjustable by a screw 43 so as to adjust the position of the coil with respect to the midpoint of the mandrel axis. A gauge 46 adjusted by a screw 49 operated by worm gear may be mounted on the mandrel support for a similar purpose. The coil is placed on the platen against the adjusted gauge 41 and the platen then received until the coil is in alignment with the mandrel axis, whereupon the carriage is traversed to the left to place the coil on the mandrel. When the coil. is clamped on the mandrel the platen is lowered and the carriage returned to receive another coil.
Patent GB-613627-A (GB)
Title: Improvements in or relating to electrical condensers
IPC: H01G2/08
Filed: 1946-06-20
Abstract: 613,627. Condensers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and ANDERSON, L. E. June 20, 1946, No. 18627. Convention date, June 22, 1945. [Class 37] An electric condenser unit comprises upper and lower fluid reservoirs 12 and 15 between which a plurality of condensers 18, each wound on a conduit 19, are arranged in such a manner that cooling fluid can pass between the reservoirs through the said conduits. Glass tubes 30, also connecting the reservoirs 12 and 15, are spaced between the condenser units to assist in the cooling of their exterior surfaces. The complete unit is housed in a metallic casing 1 filled with an insulating oil and provided with high current terminal bushes 3 and 4. The condensers 18 comprise two layers of a dielectric material, preferably polystyrene ribbon, wound with layers of metal foil about the conduits 19 so that one edge of each strip of metal, foil projects beyond opposite edges of the dielectric material, metal cup-shaped discs 23 and 24 being located at the ends of the rolled condensers for making electrical connections. If the conduits are electrically conductive, an insulating bush is provided between the conduit and one end disc of each condenser.
Patent GB-1088368-A (GB)
Title: Improvements in or relating to greases
Inventor: MOORE HOWARD DANIEL
IPC: C10M169/00
Filed: 1966-04-28
Abstract: A grease comprises a major proportion of a polyphenyl polyether and a minor proportion of colloidal silica waterproofed with a polymeric silicon compound e.g. polyalkylhalosilanes and polyalkylalkoxysilanes.  The polyethers may have tert.-butyl or alpha-cumyl substitutents.  The grease may contain graphite and metal sulphides e.g. molybdenum and antimony sulphides.
Patent GB-668280-A (GB)
Title: Apparatus for the pyrolysis of ketenizable organic compounds
IPC: C07C45/89
Filed: 1948-07-12
Abstract: Apparatus for the pyrolysis of ketenizable compounds such as acetone and acetic acid to produce ketene and other products comprises a furnace housing containing a plurality of coils, and a plurality of partition walls extending only partially across the interior to form a plurality of chambers with communicating openings, said coils being at least partially of a chromium steel and positioned within said chambers, means for supplying and withdrawing heating medium to and through said apparatus, and refractory members positioned within the space encircled by said coils.  The apparatus, which is similar to that of Specification 668,268, comprises preheater, superheater, and pyrolysis coils, 3, 6, 8 in chambers 27, 28, 29 formed by <PICT:0668280/IV (b)/1> partition walls 12, 13, 14, in furnace housing 11.  Combustion gases pass upwards in chamber 29 through axial openings 30, 31 to concentric passageways 32, 33 and brickwork passage 34 to chamber 28, thence to chamber 27.  Members 21, 22, 23, preferably formed like the partition walls of materials capable of radiant heating, e.g. silicon carbide, firebrick, chromium or nickel-chromium iron or steel alloys or aluminium, and comprising superposed sections held by rods embedded in the housing, are encircled by the coils 3, 6, 8 of chromium-nitrogen or chromium-aluminium steel, through which the feed such as acetic acid containing a phosphate catalyst enters at 2 and leaves at 9.  Member 21 may be hollow for passage of gases to the stack.
Patent GB-986388-A (GB)
Title: Washer and method and apparatus for making said washer
Inventor: WEIDNER HARRY CHARLES
IPC: B29C43/00
Filed: 1961-05-24
Abstract: 986,388. Washers and securing them against loss. ATLAS BOLT & SCREW CO. May 24, 1961, No. 18692/61. Heading F2H. [Also in Division B5] A washer comprises a metal backing member 15b, having a central aperture 15a, bonded to a moulded resilient sealing member. The sealing member has a portion 16b bonded to the wall of aperture 15a, a central portion, which may be conical, 16c-1, Fig. 4, or cylindrical, 16c-3, Fig. 6, and which has a blind hole 16a-1, and an outwardly extending portion formed as a film 16d bonded to the surface of the backing member. The holes 16a-1 may be formed as through-holes, Figs. 10-13 (not shown), and the metal backing members may be convex, Figs. 5, 9, 11, 13 (not shown). Disassembly of a washer from a screw after insertion of the latter is prevented by the diameter of the hole being less than the major diameter of the screw at least in part (the hole may taper) and by the puncturing of the end wall in the case of the blind holes 16a-1.
Patent GB-146833-A (GB)
Title: Fly ball governors
IPC: G05D13/00
Filed: 1920-07-05
Abstract: 146,833. Worthington Pump & Machinery Corporation, (Assignees of Haeborlein, M.). July 5, 1919, [Convention date]. Centrifugal governors; transmitting-mechanism. - A centrifugal governor comprises a rotating spindle 5, a non-rotating collar 19 slidably and loosely mounted on the spindle and connected by levers 21 to the speed-controlling means and by a rotating sleeve 24, pin 26, and link 17 to a plate 13 actuated by the governor weights. The sleeve 24 is clear of the spindle, and the sleeve 19 is in two parts connected by bolts &c. The weight levers 15 may be pivoted on arms 8 carried by a plate 7 on the spindle 5, and the governor is controlled by a spring between the plate 13 and an adjustable cap 11.